Whole watermelon can be stored at room temperature for 7-10 days. Cut watermelon can be stored in the fridge for 3-4 days.
There are many different theories on how to pick and choose the perfect watermelon, but here’s the definitive way: pick a watermelon that’s heavier than it looks!
Watermelon is 92% water so it should feel heavy. Look for a melon that’s symmetrical and firm with no significant dents, bruises, or cuts. The bottom should have a creamy yellow spot from where it was sitting in the sun to ripen. Usually mini watermelons will not have a yellow sun spot.
To Freeze Watermelon, cut into 1-inch squares and place in a freezer bag.
Because watermelon is 92% water, it freezes very well. For a cool summertime treat, freeze the cubes for an hour or two and serve immediately. Or allow to freeze completely, then use as “ice cubes” which add flavour to water and fruit drinks.
You can also puree leftover watermelon and freeze it into popsicles, either with or without yogurt.
Keep in mind that the freezing process can dramatically change the texture of watermelon after you thaw it. This is why it is not recommended that you freeze watermelon for longer than a couple of hours if you want to enjoy it whole. However, frozen watermelon can blended into smoothies and drinks.